[Keyboard] Plaid - Add compatibility for LAYOUTS = planck_mit planck_grid (#5591)

* Add compatibility for LAYOUTS = planck_mit planck_grid

* Add compatibility for LAYOUTS = ortho_4x12

* Remove planck_grid community support from Plaid

keyboards/plaid/plaid.h

@@ -60,4 +60,6 @@
 
 #define KEYMAP LAYOUT_plaid_grid
 #define LAYOUT_ortho_4x12 LAYOUT_plaid_grid
+#define LAYOUT_planck_mit LAYOUT_plaid_mit
+#define LAYOUT_kc_ortho_4x12 KC_KEYMAP
 #define KC_LAYOUT_ortho_4x12 KC_KEYMAP

keyboards/plaid/rules.mk

@@ -97,5 +97,5 @@ NO_UART = yes
 NO_SUSPEND_POWER_DOWN = yes
 
 
-LAYOUTS = ortho_4x12 planck_mit planck_grid
+LAYOUTS = ortho_4x12 planck_mit
 LAYOUTS_HAS_RGB = no